Diffraction by a Semi-Infinite Parallel-Plate Waveguide with Five-Layer Material Loading: A Rigorous Solution Based on the Wiener-Hopf Technique

The analysis of electromagnetic scattering by open-ended metallic waveguide cavities is important in the prediction and reduction of the radar cross section (RCS) of a target. Various diffraction problems involving two- and three-dimensional (2-D and 3-D) cavities have been analyzed thus far based on high-frequency techniques and numerical methods. However, the solutions obtained by these methods may not be uniformly valid for arbitrary dimensions of the cavities. In this paper, we shall consider a semi-infinite parallel-plate waveguide with five-layer material loading as a geometry that can form cavities, and analyze rigorously the E-polarized plane wave diffraction by means of the Wiener-Hopf technique [1] , [2] .